CN201537165U - Reversible shape memorizing oviductal plug blocking device - Google Patents
Reversible shape memorizing oviductal plug blocking device Download PDFInfo
- Publication number
- CN201537165U CN201537165U CN2009202065594U CN200920206559U CN201537165U CN 201537165 U CN201537165 U CN 201537165U CN 2009202065594 U CN2009202065594 U CN 2009202065594U CN 200920206559 U CN200920206559 U CN 200920206559U CN 201537165 U CN201537165 U CN 201537165U
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- bolt
- plug blocking
- fallopian tube
- oviduct
- blocking device
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Abstract
The utility model discloses a reversible shape memorizing oviductal plug blocking device which comprises a cylindrical plug blocking body; spiral bulges are formed on the excircle of the plug blocking body so as to form a spiral rod structure; and the difference of the major diameter and the minor diameter of spiral rod is less than or equal to 0.8 mm. When an oviduct is implanted, the plug blocking device shortens and expands under the action of body temperature; the epithelial mucosal fold of the oviduct is fully embedded in grooves formed by the spiral bulges and the surface of the plug blocking body, thereby realizing physical blockage after the plug blocking device is in close contact with the cavity of the oviduct; with the degradation of the plug blocking device and the proliferation of epithelial tissue of the fallopian tube, the plug blocking device and the oviduct are sealed durably, so as to achieve complete blockage of the oviduct and safe and reliable contraceptive effect; through the spiral structures of the bulges, the plug blocking device can be pushed into and fixed in the oviduct conveniently, thereby improving the use security; and the whole device is simple in structure, convenient in implementation, and safe and efficient in contraception.
Description
Technical field
This utility model relates to a kind of contraception device, particularly a kind of recoverability shape memory fallopian tube plugging device.
Background technology
Through fallopian tube contraception one of common method of human control fertility, because of its safety, reliable, advantage such as put things right once and for all are accepted extensively by the women of child-bearing age in the world wide.In the Asia, American States, tubal sterilization has accounted for 30-33%, but tubal sterilization, comprise that tubal ligation and silver brain clip folder closes the fallopian tube art, still have deficiency, as: recoverability is low, postoperative complication and sequela are many, and the receptor easily produces the feared state of mind etc. to performing the operation.Ideal method of birth control should have following characteristics: safe, reliable, easy, inexpensive, have a recoverability.
The salpingemphraxis art is the main method through fallopian tube contraception, comprises that gluing and stoping method and bolt block up art.Employed medicine or macromolecular material are bigger to the fallopian tube damage in the gluing and stoping method, easily cause local adhesion, and recoverability are very low, have studied less at present.The fallopian tube bolt blocks up art, common have: silastic embolism, polyethylene bolt, nylon embolus, Nitinol silastic embolism, ESSURE etc., much entered the clinical research stage, contraceptive effect is reliable, but still has limitation, as the ESSRUE of the U.S., it is a kind of Nitinol little spring, the sterillization device of interior filled nylon is made by metal material, and shortcomings such as fallopian tube perforation, magnetic conduction easily take place.
The utility model content
In view of this, this utility model provides a kind of recoverability shape memory fallopian tube plugging device, and is simple in structure, it is convenient to implant, and stationarity is good, closely contacts and realize oviducal effective shutoff behind the implant into body with the fallopian tube tube chamber, and can not damage oviduct tissue, the safety that guarantees birth control is with reliable.
Recoverability shape memory fallopian tube plugging device of the present utility model comprises that columned bolt blocks up body, the stifled body of described bolt adopts degradable macromolecular material with shape memory characteristic to make, the stifled external circle of described bolt is provided with the spiral type projection and forms screw rod, and the big footpath of described screw rod is less than or equal to 0.8mm with the difference of path.
Further, also comprise bullet shaped bolt plug, described bolt plug is positioned at the stifled body front end of bolt and is integral with the stifled system of bolt, and described bolt plug base diameter is less than the big footpath of screw rod;
Further, the stifled surface of bolt that is positioned between spiral type projection two adjacent rings is recessed to form the indent chamfering;
Further, described bolt blocks up body, bolt plug and annular protrusion by based on lactide and 1,4-makes the multi-block polyurethane material of dioxy Ketohexamethylene, described material is with the poly-(lactide-co-1 of terminal hydroxy group, 4-is to the dioxy Ketohexamethylene) be soft section, serve as hard section with vulcabond and ammonia ester segment of difunctional micromolecule stroke that contains reactive hydrogen or urea groups segment product.
The beneficial effects of the utility model: recoverability shape memory fallopian tube plugging device of the present utility model, comprise that columned bolt blocks up body, the stifled external circle of described bolt is provided with the spiral type projection and forms the screw rod structure, the stifled body of bolt adopts degradable temperature sensitive type shape memory high molecule material by compression molding, be a tensile elongated screw type structure before the implant into body and the stifled body of bolt can be implanted in the fallopian tube smoothly, after the implantation, the cripetura expansion takes place and reverts to the form of design in advance in the stifled body of bolt under the body temperature environment, the stifled body of the bolt that expands closely contacts with the fallopian tube tube chamber, the uterine tubal epithelium tissue fully embeds in the groove that spiral type is protruding and the stifled surface of bolt forms, make fallopian tube reach thorough thromboembolism in the time limit at material degradation, further, uterine tubal epithelium hamartoplasia better is stuck in plugging device in the fallopian tube, realize lasting shutoff when avoiding it to vacillate, and the helical structure of projection, the one, be convenient to plugging device and push to intratubal, two can avoid plugging device that oviduct tissue is caused scratch, whole plugging device is simple in structure, it is convenient to implant, contraceptive effect is good, and is safe and reliable to human body simultaneously.
Description of drawings
Below in conjunction with the drawings and specific embodiments this utility model is further described.
Fig. 1 is structural representation of inserting behind the human body of the present utility model;
Fig. 2 inserts structural representation before the human body for this utility model.
The specific embodiment
Fig. 1 is structural representation of inserting behind the human body of the present utility model; Fig. 2 inserts structural representation before the human body for this utility model.
As shown in the figure:
The recoverability shape memory fallopian tube plugging device of present embodiment comprises that columned bolt blocks up body 1, the stifled external circle of described bolt is provided with spiral type projection 2 and forms the screw rod structure, the big footpath of described screw rod equals 0.8mm with the difference of path, the stifled system of annular protrusion and bolt is integral, during use, the fallopian tube plugging device of this utility model structure is drawn into the slim-lined construction of minor diameter, and implants fallopian tube by placement device and get final product; After the implantation, the plugging device of minor diameter shortens under body temperature and expands, and the uterine tubal epithelium mucosal fold fully embeds in the groove between spiral type projection and the stifled body of bolt, the stifled body of bolt is closely contacted with the fallopian tube tube chamber and causes the obstruction of fallopian tube physics; Growth along with the time of implantation, the degraded of uterine tubal epithelium hamartoplasia and plugging device, at material degradation in the time limit, lasting airtight and thorough shutoff between fallopian tube and the plugging device, thereby realize contraceptive effect safely and effectively, the helical structure one of projection is to be convenient to the stifled body of bolt advance in fallopian tube, and two can protect the fallopian tube tube chamber can not abraded by plugging device, improve the safety of its use; Certainly, in the present embodiment, the purpose of this utility model can be realized with the difference of path equally less than 0.8mm in the big footpath of screw rod structure.
As further improvement, the recoverability shape memory fallopian tube plugging device of present embodiment also comprises bullet-shaped bolt plug 3, bolt plug 3 is positioned at stifled body 1 front end of bolt and makes one with the stifled body 1 of bolt, bolt plug 3 base diameters are less than the big footpath of screw rod, the bullet-shaped structure of bolt plug makes that this plugging device is easier and inserts in the human body fallopian tube, and is easy to operate and use.
As further improvement, in the present embodiment, the stifled surface of bolt that is positioned between 2 liang of adjacent rings of spiral type projection is recessed to form indent chamfering R, and this structure is more conducive to the abundant filling after the uterine tubal epithelium hamartoplasia, realize effective obturation of fallopian tube lumen, ensure contraceptive effect.
As further improvement, in the present embodiment, bolt blocks up body 1, bolt plug 3 and spiral type projection 2 by based on lactide and 1, and 4-makes the multi-block polyurethane material of dioxy Ketohexamethylene; Because contraception person usually wishes can recover to become pregnant after the contraception, and for present fallopian tube plugging device, all needing to take out utensil by hysteroscope during superfoetation realizes, increase cost to birth control, bring burden and pressure to the receptor, based on lactide and 1,4-is degradable macromolecular material with shape memory characteristic to the multi-block polyurethane material of dioxy Ketohexamethylene, this material can be given this recoverability shape memory fallopian tube plugging device shape memory function, this plugging device can vertically be elongated to dwindle the key diameter, be convenient to be implanted into to body; And behind its implant into body, under the body temperature environment, material is given full play to shape memory characteristic, and plugging device expands and retracts into the shape of design in advance and stop up fallopian tube, realizes oviducal thorough thromboembolism; Simultaneously, because material possesses the degradable characteristic, after date can be degraded automatically during one section of implant into body, need not to take out once again after making it implant fallopian tube; Described material is with the poly-(lactide-co-1 of terminal hydroxy group, 4-is to the dioxy Ketohexamethylene) be soft section, with vulcabond and ammonia ester segment of difunctional micromolecule stroke that contains reactive hydrogen or urea groups segment product serve as hard section, soft by regulating, hard section ratio so that the different degraded time limits to be set, reaches the effect of contraception in limited time, further, because of this material has excellent biological compatibility and histocompatibility, therefore implant the back organizing of each one of health all do not had injury, use safer.
Explanation is at last, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although this utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (4)
1. recoverability shape memory fallopian tube plugging device, comprise that columned bolt blocks up body, the stifled body of described bolt adopts degradable macromolecular material with shape memory characteristic to make, it is characterized in that: the stifled external circle of described bolt is provided with the spiral type projection and forms screw rod, and the big footpath of described screw rod is less than or equal to 0.8mm with the difference of path.
2. recoverability shape memory fallopian tube plugging device according to claim 1 is characterized in that: also comprise bullet shaped bolt plug, described bolt plug is positioned at the stifled body front end of bolt and is integral with the stifled system of bolt, and described bolt plug base diameter is less than the big footpath of screw rod.
3. recoverability shape memory fallopian tube plugging device according to claim 2 is characterized in that: the stifled surface of bolt that is positioned between spiral type projection two adjacent rings is recessed to form the indent chamfering.
4. recoverability shape memory fallopian tube plugging device according to claim 3, it is characterized in that: described bolt blocks up body, bolt plug and annular protrusion by based on lactide and 1,4-makes the multi-block polyurethane material of dioxy Ketohexamethylene, described material is with the poly-(lactide-co-1 of terminal hydroxy group, 4-is to the dioxy Ketohexamethylene) be soft section, serve as hard section with vulcabond and ammonia ester segment of difunctional micromolecule stroke that contains reactive hydrogen or urea groups segment product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202065594U CN201537165U (en) | 2009-09-29 | 2009-09-29 | Reversible shape memorizing oviductal plug blocking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202065594U CN201537165U (en) | 2009-09-29 | 2009-09-29 | Reversible shape memorizing oviductal plug blocking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201537165U true CN201537165U (en) | 2010-08-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202065594U Expired - Fee Related CN201537165U (en) | 2009-09-29 | 2009-09-29 | Reversible shape memorizing oviductal plug blocking device |
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| Country | Link |
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| CN (1) | CN201537165U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102327158A (en) * | 2011-09-29 | 2012-01-25 | 付正英 | Biological degradable self-expansive fallopian tube intrauterine device produced by natural synthesis composite materials |
| CN102949261A (en) * | 2012-10-25 | 2013-03-06 | 中国人民解放军第三军医大学第一附属医院 | Special-shaped anti-dropping seminiferous duct sterilization apparatus |
| CN103860314A (en) * | 2014-02-27 | 2014-06-18 | 中国人民解放军第三军医大学第一附属医院 | Automatic in vivo placement system for conveying screw rod type shape memory contraceptive suppository |
| CN103860313A (en) * | 2014-02-27 | 2014-06-18 | 中国人民解放军第三军医大学第一附属医院 | In vivo placement system for conveying screw rod type shape memory fallopian tube contraceptive suppository |
| CN111714180A (en) * | 2020-07-28 | 2020-09-29 | 蔡华蕾 | Reducible uterine tube sterilization device and its plugging spring ring |
| CN114886652A (en) * | 2022-05-10 | 2022-08-12 | 哈尔滨工业大学 | Dual-purpose stent capable of realizing shape memory for sterilization and vasovasostomy |
-
2009
- 2009-09-29 CN CN2009202065594U patent/CN201537165U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102327158A (en) * | 2011-09-29 | 2012-01-25 | 付正英 | Biological degradable self-expansive fallopian tube intrauterine device produced by natural synthesis composite materials |
| CN102327158B (en) * | 2011-09-29 | 2013-01-02 | 付正英 | Biological degradable self-expansive fallopian tube intrauterine device produced by natural synthesis composite materials |
| CN102949261A (en) * | 2012-10-25 | 2013-03-06 | 中国人民解放军第三军医大学第一附属医院 | Special-shaped anti-dropping seminiferous duct sterilization apparatus |
| CN102949261B (en) * | 2012-10-25 | 2014-09-10 | 中国人民解放军第三军医大学第一附属医院 | Special-shaped anti-dropping seminiferous duct sterilization apparatus |
| CN103860314A (en) * | 2014-02-27 | 2014-06-18 | 中国人民解放军第三军医大学第一附属医院 | Automatic in vivo placement system for conveying screw rod type shape memory contraceptive suppository |
| CN103860313A (en) * | 2014-02-27 | 2014-06-18 | 中国人民解放军第三军医大学第一附属医院 | In vivo placement system for conveying screw rod type shape memory fallopian tube contraceptive suppository |
| CN103860314B (en) * | 2014-02-27 | 2016-03-02 | 中国人民解放军第三军医大学第一附属医院 | For imbedding system automatic in the body of conveyor screw rod-type shape memory contraceptive suppository |
| CN111714180A (en) * | 2020-07-28 | 2020-09-29 | 蔡华蕾 | Reducible uterine tube sterilization device and its plugging spring ring |
| CN114886652A (en) * | 2022-05-10 | 2022-08-12 | 哈尔滨工业大学 | Dual-purpose stent capable of realizing shape memory for sterilization and vasovasostomy |
| CN114886652B (en) * | 2022-05-10 | 2024-04-12 | 哈尔滨工业大学 | Shape memory dual-purpose support for sterilization and vasectomy |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100804 Termination date: 20100929 |